arrested in the kidnapping of an 11-month-old girl. karla hernandez was taken into custody last night. police believe it was hernandez who drove away last moping in a jeep with the baby friday. the baby's mom just stepped out of the car to close the garage door and left the keys in the ignition. a sketch of hernandez was circulated and police say witnesses and evidence tied her to the crime. hernandez is in jail on drug and kidnapping charges. >>> new at 11:00. a split second decision by a san jose teage saves 0 boys from falling more than 300 feet. it happened in yosemite. >> i hear this mom screaming, my god, save my baby. after i hopped the fence, i could hear my parents going, please, don't do it. >> no, please, no, no, and he just was in just like that. >> alex smith and his family just hiked to the fall when a nine-year-old boy fell into the river. alex jumped over the railing, held on to a rock and snagged the boy as he was going by in the rapids. alex's dad came to help. >> when i reached him, he reached me. he looked up at me like the craziest look in his eye, please help me.